Basler Electric BE1-11 IEC 61850 Protocol - Manual (Page 14)

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Figure 5. Modeling Approach Example
Substation Configuration Description Language (SCL)
The SCL language is based on XML (Extensible Markup Language). Detailed knowledge about an XML
file is not required, but the information within the file may be of interest. An SCL XML file is divided into
the following five sections as specified in IEC 61850-6:
•
Header
•
Substation description
•
Communication system description
•
IED description
•
Data Type Templates
The Header identifies an SCL configuration file and version, and specifies options for the mapping of
names to signals. The Substation section describes the functional structure of a substation, and defines
the primary devices and their electrical connections.
Default ICD files in BEST61850 software are used to define the Header and Substation description
sections. Logical nodes of the IED are logically linked to the substation section. BEST61850 software is
used for signal engineering and routing of the signals. BESTCOMSPlus must be used to define the
substation and communication sections prior to using BEST61850. BEST61850 is used to configure the
DataSets and Control Blocks that are located in the IED section. The DataSets and Control Blocks
(Report, GOOSE, and Setting) are logically defined as part of the logical nodes per IEC 61850-7-2.
GOOSE engineering requires that BEST61850 has the correct configured Communication description
section. The Data Type Templates section gives the correct content description of each logical node type
to the clients. Logical node type definitions may vary between each IED and vendor.
Figure 6 shows the principle structure of the SCL XML file. The arrows show the link between the different
sections given when an IED is integrated in the substation structure and/or in the communication
structure. All available logical nodes of an IED are linked to the substation section.
A reference to the GoCB (GOOSE Control Block) is included in the communication section when the
GoCB is configured. The graphical presentation of the XML file is a standard view of XML editors. It gives
a better picture about the structure of the XML contents.
IEC 61850 Engineering BE1-11